Machine for forming seamless tubes from pulp



(No Model.) 4 Sheets-Sheet 1.

H. J. MEDBERY.

MACHINE FOR FORMING SEAMLE$S TUBES FBOM'PULP.

No. 396,103. Patented Jan. 15, 1889.

Snow M300,

N. PETERS. Phclo-Litmgmpher. Wzshingtun, D C.

(No Model.) 4 sheets-s e t 2.

H. J.-'MEDBERY.

MACHINE FOR FORMING SEAMLESS TUBES FROM PULP. No. 396,103. Patented Jan.15, 1889.

a m m w 5 N. PETERS. malzmio u mr. Washington D z.

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: 19M140, fied/ (No Model.)

H. J. MEDBER'Y.

4 Sheets-Sheet 3.

MAGHINE FOR FORMING SEAMLESS TUBES FROM PULP.

Patented Jan. 15, 1889.

(No Model.) I 4 Sheets-Sheet 4.

J. MEDBERY.

MACHINE POR'FO'RMING SEAMLESS TUBES FROM PUIL'P. i No. 396,103. PatentedJamv15. 1889.

draulic jack F.

HORACE J. MEDBERY, OF llAlihS'lON, NElV YORK.

MACHINE FOR FORMING SEAMLESS TUBES FROM PULP.

SPECIFICATION forming part of Letters Patent No. 396,103, dated. January15, 1889. Application filed July 7, 1887. Serial No. 243,638. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, HORACE .T. MEDBERY, of Ballston, in the county ofSaratoga and State of New York, have invented certain new and usefulImprovements in Machines for Forming Seamless Tubes from Pulp, whichimprovementsare fully set :forth in the following specification,reference being made therein to the accompanying drawings.

My invention relates to machines for making seamless tubes, pipes, orother analogous articles of a uniform diameter throughout from paper orwood pulp; and it consists in the peculiar construction and arrangementof parts adapted to form straight sections of pipe, as hereinafterdescribed.

In the drawings, Figure 1 is a side elevation of the machine embodyingmy improvements, the former D and its lifting devicev A being shownnearly at their lowest positions, which lowest positions permit theformer to be turned down horizontally, as shown in dotted lines,

when freed from the molding-oylinder, the said Fig. 1 also showing indotted lines the elevated position of the lifter A and attached parts B,(l, D, and E as when the former D is fully telescoped into the cylinderL. Fig. 2 is a plan view of the litter or elevator. l ig. is a sectionalview of the upper part of the molding-cylin'der with the former in thesame. Fig. 4 is a sectional view of the lower part of the same with theformer inserted and the parts (I and E locked to the bottom of the saidmoldiug-cylinder. Fig. 5is a plan viewof the former. Fig. (3 is aperspective view of the form er with its d iiierent parts partlyremoved. Fig. 7 is a similar view of the key of the former removed. is aperspective view of the former and detachable head, the head beingpartly detached from the main part. Fig. 9 is a detail of a part of thehinge which connects the lower end of the former to the lifter A. Fig.10 is a plan view of the lock- 3 ing-ring at the bottom of themolding-cylinder.

Similar letters refer to si milar parts th roughout the several views.

A is the lifter or elevator, which is raised by rods K, attached tocross-head I, which latter is forced upwardly by plunger G of hyll isthe stock-pipe or feeder. is a portion of the hinge which connects thelower end of the former D to the lifter A, (I .being the detachablehead, with outlets m, Fig. 4, and (Z the shaft on which it loosely fits.

E is the locking-ring at the bottom of the moldi n yl i nd er.

L, Figs. 1, 3, and 4, is the hollow moldingcylindcr for containing therubber bag N, into which the former is forced as it ascends, and I, Fig.3, is the movable plate to which the top of the rubber bag N is secured.

M shows apertures for draining the molding-cylinder Lwhen in operation,m representing the drainage from the former D.

O is the cloth bag that envelops the former, and o is a perforatedmetallic eoveringof the main part of the former.

P is the upper end of the formen p is a gauze or wire n etting to allowthe discharge of the air from the bag while being filled with pulp, andto admit air into the interior of the former to break the vacuum.

q is the groove or slot, and Q is the key titting therein.

R is a plate at the top of molding-cylinder, between which and plate Ithe upper end of rubber bag N is secured.

b, Fig. 3, is the pipe for supplying water underpressure on the outsideof rubber bag LT.

T is a screw to hold plate It to the top of the molding-cyl iuder.

\V is the base of the moldi ng-cyl inder, which has an opening intowhich passes the head 6?, and with which opening the stock-pipe Bcommunicates when pulp is to be introduced. This base is provided withhooks to, projecting therefrom, into which fit corresponding parts ofthe locking-ring E.

X, Fig. 1, is the feed-pipe for thehydraulie jack, by means of whichpower is applied to raise the former into the 1nolding-cylinder whenready to be charged with pulp.

Y is the key to guide-yoke, Fig. 1.

The former D is a hollow cylinder with a slot for a key running itswhole length, its outer surface having circular and longitudinalgrooves, at the intersections of which are perforations to allow thepassage of air and water. The former'D (excepting the slot for key Q) iscovered with sheet-brass, 0, perforated [or the same purpose, and saidsheet-brass is covered with a loose bag or sleeve ot' cloth, 0, which isheldv tigl'itly in place by key Q, the insertion of which completes thecylinder. Loosely fixed to a post secured to the lower end of saidtormer l) is headv d, (see Fig. 9,) which maybe removed tor the purposeof cleaning the former when cloggetfl. Rubber bag N is stationary inniolding-cylinder L, and is fastened at the top between plates R l, asbefore described, or by any other suitable and connnou means, as willreadily be understood. The said bag is 'tastened to the base of saidnioldilig-cylinder by being clamped between base \V and its plate above.

Having thus described the construct ion ot' my improved machine, T willnow explain the mode of its operation.

The former D having been thrown into a perpendicular position, hydraulicpressure is i applied at .23, whereby the litter A is raisedonthecylinderh. (See Fig.1). The former-D, which is hinged at the lowerpart to litter A, is forced up into the elastic rubber bag N, as seen inFig. r, and when up its full length within said bag it is locked inposition as long as may be desired for charging it with pulp. The pulpor stock is then pumped through the pipe or feeder B, so that the pulppasses in between the former l) and rubber bag N until said rubber l'lagis fully expanded against the inner surface of moldilig-cylindcr L. hensut'tieient pulp shall havebeen thus pumped in to Fill the space, sothat the pulp is tightly pressed between the former l) and the rubberbagN, the supply is shutott'. llydraulic pressure is then applied to theexterior ot rubber bag through pipe S, Fig. 25, and the water expressedFrom the pulp passes through the various grooves or channels cut in theformer l) and through drainage-outlets at n]. The paper-pulp is thuscompressed into a tube. Then by means of three-way air-valves (notshown) air is allowed to pass into and through the cylinder of former D.This air t'inds its way through the round holes of the said cylinder andfills the circular and longit udinal grooves thereof, and penetrates theminute openings in the perforated metallic covering o, thus serving torelease the pulp now formed into a pipe, so that it will not adhere tothe cloth bag envelopin the said shaper. 'When the pressure within.molding-cyl inder L has been sutficient, by means of a three-way cock atthe top (not shown) air is admitted into said cylinder, and the waterallowed to pass out by a cock in a pipe communicating with the outlet Mat the base of said cylinder. The former D is then unlocked from. saidcylinder, and air passing up through former D breaks the Vacuum betweenrubber bag N and the newly-formed pipe or tube. The said rubber bagbecomes thereby detached from said pipe or tube, and the latter can bewithdrawn without injury to either the bag or the article formed. FormerI) being then withdrawn from molding-cylinder L by an operation thereverse of that by which it 'as inserted, it is turned down by means ofhinge C to a horizontal position. Key Q is then withdrawn, so that clothbag 0 becomes slack or loose, and the n ewly-mad e pipe or tul )0 mayreadily be taken off from former D with cloth 0.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

1. The combination of the n1olding-cylinder L, having inlet-waterpipe Sand outlet waterpipe M, the rubber bag secured at both top and. bottomof the cylinder, the adjustable forz'uninated former D, with detachablehead (7, havingwater'outlets m in the same, the rotary adjustablelocking-ring E, and the hooks u, substantially as and for the purposedescribed.

2. The grooved and perforated metal. cylinder D, haying groove q, thetoraniinated jacket 0, of metal, the outer covering, 0, of cloth, andthe locking-key (,2, fitting in the groove q and securing the said clothctwering, st-ibstantially as shown and described.

5}. The combination of the hydraulic jack F G, cross-head I, rods K K,attached lifter A, surroundin the jaclecylindcr, the molding-eylinderfixed to the upper end of the l jaelr-cylinder,and the foraminatedformer D, with head (I, and the hinge U, for connecting the former tothe litter, with an articulated joint, snljistantially as shown anddescribed.

I HORACE J. MEDBERY.

Witnesses:

Geo. W. PATTEN, FRED GLUSETTLE.

